The Simple Nav is a footer only menu section, you can create a child simple nav section and change the workswith line so that the section works with the header template area. However, in doing so, we will not be able to provide support.

Alternatively, you can use both the NavBar and NavClassic together, to set the NavBar Wordpress menu, visit the NavBar settings in PageLines > Site Options > NavBar. For Nav Classic, go to Appearance > Menu > Theme Locations and select your menu from the drop down for Primary Site Navigation.

The Secondary Navigation can be used with Wordpress Menus, but this is on a per post/page basis and can be configured on the post/page PageLines Meta Settings. There is no global option for the Secondary Navigation section, as it was not designed to be a global nav option.